Clock Math

#include<iostream>
#include<iomanip>
using namespace std;
int main()
{
    int h,m;
    cin>>h>>m;
    double angle;
    angle = (360-(h*30)+((m/5.0)*30)-(m*30)/60.0);
    cout<<fixed<<setprecision(7)<<angle<<endl;

    return 0;
}